PBX (stands for private branch exchange) is a private telephone network used that can be very easily connected to the public landline and mobile networks. The PBX network also provides audio, video and instant messaging communication through the TCP...

Varnish is an HTTP accelerator designed for content-heavy dynamic web sites. In contrast to other web accelerators, such as Squid, which began life as a client-side cache, or Apache and nginx, which are primarily origin servers, Varnish was designed...

The acronym LEMP refers to first letters of the four components of a solution stack, composed entirely of free and open-source software, suitable for building high-availability heavy-duty dynamic web sites, and capable of serving tens of thousands...

Node.js is a software platform that is used to build fast and easily scalable applications. Node.js utilizes JavaScript as its scripting language, and achieves high throughput via non-blocking I/O and a single-threaded event loop.

Security is always very important when it comes to any type internet communication. SSL certificates are one way to get higher level of security for web servers. When a web server runs using secure protocols, it is using public and private keys in...